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CVE-2025-47539: Critical Vulnerability in Themewinter Eventin

A critical privilege escalation vulnerability has been identified in the Themewinter Eventin plugin for WordPress, affecting versions up to 4.0.26. Organizations must prioritize patching to mitigate potential security threats.

CRITICALPublic ExploitCVSS 9.8 · Published May 23, 2025

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A critical vulnerability has been discovered in the Themewinter Eventin plugin, classified as Incorrect Privilege Assignment. This vulnerability allows for privilege escalation, enabling attackers to gain unauthorized access to functionalities that should be restricted. The severity of this vulnerability is underscored by its CVSS score of 9.8, indicating a significant risk to affected systems.

The vulnerability affects all versions of Eventin prior to 4.0.27. As such, organizations utilizing this plugin are at heightened risk of exploitation, which could result in unauthorized actions being performed by attackers with elevated privileges.

Given the exploitability of this vulnerability, organizations should prioritize patching immediately. Failure to address this vulnerability could lead to severe consequences, including data breaches and disruption of services.

This vulnerability has been confirmed to have an active exploit, and there are public proof-of-concept codes available. Therefore, it is crucial for organizations to take proactive measures to secure their systems.

Vulnerability Details

The vulnerability is classified under CWE-266, indicating an Incorrect Privilege Assignment issue. The CVSS score of 9.8 highlights the critical nature of this vulnerability. The attack vector is categorized as NETWORK, with a low attack complexity, no privileges required, and no user interaction needed.

The impacts of this vulnerability are extensive, affecting confidentiality, integrity, and availability. Organizations must ensure they are using versions of Eventin that are patched to prevent potential exploitation.

Technical Analysis

The root cause of this vulnerability lies in the improper assignment of privileges within the Eventin plugin. Attackers may exploit this vulnerability through network access, taking advantage of low attack complexity to escalate their privileges without requiring any user interaction.

This exploitation could allow attackers to modify, delete, or access sensitive data, thereby compromising the integrity and confidentiality of the system. The availability of the system could also be affected as a result of these actions.

Risk & Impact Analysis

Risk to organizations includes unauthorized access to restricted functionalities within the Eventin plugin, leading to potential data breaches and disruption of services. The blast radius could extend to any organization using the vulnerable versions of the plugin, impacting not just the immediate organization but also their clients and users.

Organizations should address this vulnerability in their priority patch cycle due to its critical severity and the existence of known exploits. The risk of exploitation is high, and immediate action is essential to mitigate potential impacts.

Exploitation Status

Signal

Status

Known Exploit

Yes

Public PoC

Yes

Actively Exploited

No

Ransomware Use

No

Affected Versions

The vulnerability affects Eventin versions from n/a up to 4.0.26. Organizations are advised to upgrade to version 4.0.27 or later.

Mitigation & Remediation

Organizations should implement the following measures to mitigate this vulnerability:

1. **Patch to the latest version** of Eventin (4.0.27 or later) to eliminate the vulnerability.

2. **Regularly perform security assessments** to identify potential vulnerabilities in plugins and themes.

3. **Implement monitoring controls** to detect unauthorized access attempts.

For further assistance, consider engaging with professionals offering penetration testing services.

Detection Guidance

Organizations should monitor the following indicators to detect potential exploitation of this vulnerability:

1. **Log indicators** of unauthorized access or privilege escalation attempts.

2. **Behavioral anomalies** in user activities, especially related to privilege access.

AppSecure Threat Intelligence Insight

This vulnerability is significant as it represents a trend toward increasing privilege escalation issues within commonly used plugins. Organizations must remain vigilant and proactive in their security measures to mitigate such risks in the future.

Security teams should learn from this incident, ensuring that they validate the security of plugins regularly. Consider implementing a robust penetration testing methodology in their security assessments.

Regular engagement with security professionals can help organizations stay ahead of vulnerabilities and adapt to emerging threats effectively.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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